Flora of North America species comparison

20–50 cm, puberulent or retrorsely hairy proximally, puberulent and glandular-pubescent distally.

ascending to erect, 25–50 cm, retrorsely hairy, not glaucous.

puberulent or retrorsely hairy, sometimes only along midveins and margins;

basal and proximal cauline 28–68 × 3–9 mm, blade oblanceolate to lanceolate or linear, base tapered, margins entire, apex obtuse to acute;

cauline 6–9 pairs, 32–95 × 4–12 mm, blade lanceolate to linear, base tapered, apex acute.

basal and cauline, ± leathery or not, retrorsely hairy, not glaucous;

basal and proximal cauline 40–120 × 4–33 mm, blade obovate to oblanceolate, base tapered, margins entire, apex obtuse to acute;

cauline 3–5 pairs, short-petiolate or sessile, 35–70(–90) × 8–22 mm, blade lanceolate to oblanceolate, base tapered to truncate or clasping, apex obtuse to acute.

± secund, 6–28 cm, axis glandular-pubescent, verticillasters 4–11, cymes 1- or 2-flowered;

proximal bracts lanceolate to linear, 4–35 × 1–4 mm;

peduncles and pedicels glandular-pubescent.

interrupted, secund, 9–22 cm, axis glabrous or sparsely retrorsely hairy, verticillasters 7–15, cymes 5- or 6-flowered, 2 per node;

proximal bracts lanceolate, 12–50 × 3–16 mm;

peduncles and pedicels glabrous or sparsely retrorsely hairy.

calyx lobes ovate to lanceolate, 5–8 × 2–2.8 mm, glandular-pubescent;

corolla violet to lavender to purple, lined internally abaxially with purple nectar guides, ventricose, 25–35 mm, glabrous internally, tube 7–9 mm, throat abruptly inflated, 9–10 mm diam., slightly 2-ridged abaxially;

stamens: longer pair reaching orifice, pollen sacs divergent, 1.8–2.2 mm, sutures denticulate, teeth to 0.3 mm;

staminode 17–19 mm, included, 0.6–1 mm diam.;

style 15–20 mm.

calyx lobes ovate, 2.5–4 × 1.5–1.7(–2) mm, margins narrowly scarious, apex obtuse, sometimes acute to cuspidate, glabrous;

corolla blue to violet, without nectar guides, ventricose, 13–21 mm, glabrous externally, glabrous internally, tube 5–6 mm, throat gradually inflated, not constricted at orifice, 5–7 mm diam., rounded abaxially;

stamens included or longer pair reaching orifice, pollen sacs divergent, navicular, 1.3–1.7 mm, dehiscing incompletely, proximal 1/3–1/2 sometimes indehiscent, connective not splitting, sides glabrous, sutures denticulate, teeth to 0.1 mm;

staminode 8–11 mm, included, 0.6–0.8 mm diam., tip straight, distal 5–8 mm sparsely to moderately pilose, hairs yellow, to 1 mm;

style 11–13 mm.

11–15 × 7–9 mm.

6–9 × 4.5–6.5 mm.

= 16.